12 * x =112.8
178.5 : x = 21
x : 3.2 = 10.5
y+27y =0.952
33t-t=102.4
2.7x- 1.3x+3.6x=0.15

12 * х = 112,8х = 112,8 : 12х = 9,4--------------------178,5 : х = 21х = 178,5 : 21х = 8,5--------------------х : 3,2 = 10,5х = 10,5 * 3,2х = 33,6--------------------у + 27у = 0,95228у = 0,952у = 0,952 : 28у = 0,034---------------------33t - t = 102,432t = 102,4t = 102,4 : 32t = 3,2---------------------2,7х - 1,3х + 3,6х = 0,155х = 0,15х = 0,15 : 5х = 0,03----------------------------------